Bad memory/swap management in 17.10?

[Luca Olivetti]

El 11/11/17 a les 12:44, Luca Olivetti ha escrit:
> El 10/11/17 a les 12:28, Luca Olivetti ha escrit:
>> El 10/11/17 a les 12:06, Luca Olivetti ha escrit:
>>> El 09/11/17 a les 21:12, Paul Lemmons ha escrit:
>>>> I run a similar setup. I had to reduce my VM to be 2G to help. It 
>>>> was the only process I really had control over. Firefox will bloat 
>>>> over time as well. Thunderbird appears to be fairly stable. Swapping 
>>>> is bad no matter whether it does it well or not. So, were I you I 
>>>> would see how small I could make my VM and still have it functional. 
>>>> I would also look at enabling the BFQ disk I/O scheduler on the 4.13 
>>>> kernel (Default kernel on 17.10). It is built into the kernel but 
>>>> not turned on by default. That may help with the kernel catatonia 
>>>> when swapping.
>>>
>>> No, I had it already enabled
>>>
>>> $ cat /sys/class/block/sda/queue/scheduler
>>> noop deadline [cfq]
>>
>> Oops, misread cfq for bfq...
>>
> 
> OK, now I have enabled bfq, but ever other time it comes out of 
> suspension it gets totally stuck:
> I either get black screen where I only can move the mouse or the login 
> screen that doesn't accept my password with no message no nothing. If I 
> switch to a virtual console, as soon as I enter the username it blocks 
> and I have to reset the machine.
> In a sense it worked hough: it doesn't have enough time to leak memory ;-)

OK, now I managed to keep it running long enough to reproduce the 
initial situation and bfq doesn't help at all to make the machine more 
responsive. In the meantime I have enabled the magic sysrq and 
discovered how to make it work on my laptop ;-)
This is unbearable, so now I'm back to kernel 4.10.0, let's see if it works.

Bye
-- 
Luca